Kim Bum, who co-starred in hugely popular “Boys over Flowers,” is enjoying rising popularity as a singer, too. His recently released album for the Japanese audience has topped the J-pop charts of Korean music sites Melon and Bugs Music. The title song called “The Sky of Christmas Eve” was released in Japan on November 8th and has been steadily growing popular there. The song features a romantic melody and sweet lyrics.

The cute heartthrob has also held concerts in five Japanese cities during the Christmas season to promote his album. Roughly 3,000 of his Japanese fans gathered at the concerts to cheer him on and see him in person. Kim is currently shooting a romantic comedy titled, “A Woman who Still Wants to Marry.” In the drama the boyish-looking actor plays the boyfriend of a woman who is 12 years his senior. The leading female role is played by actress Park Jin-hee.